shock questions

[03400EX_Nacs]

i am gonna be getting some new shocks soon and i have a couple of questions. i seen john has done good with the fox shocks on the indoors. so i am looking into those also.. i do basicly all mx and maybe a little off road here and there. my choice shocks would be between would be axis, elka, and the new fox shocks. i guess that basicly covers all major brands anyway but i already have a rear elka off ebay and has been rebuilt.... if it would be worth it i would go ahead and buy another whole set. one think i wanna know is could i run front axis, front fox, or another type with my rear elka i heard that you couldnt run the elka with the fox because it would ride funny. i also have heard complaits about axis along with elkas.... anyway any opinions/links would be helpful and also if you know anywhere i could read up on the fox shocks
Bob